/* 导航栏样式 */
.navbar {
  background-color: var(--primary-color);
  color: white;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 60px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.nav-item {
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  font-weight: 500;
  transition: background-color 0.2s;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-item.active {
  background-color: #3498db;
}

.nav-item.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #1abc9c;
}
